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相关概念视频

Generalization, Discrimination, and Extinction01:24

Generalization, Discrimination, and Extinction

1.3K
Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
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Principles of Classical Conditioning01:23

Principles of Classical Conditioning

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Classical conditioning, as described by Ivan Pavlov, is a foundational concept in associative learning, where a neutral stimulus becomes capable of eliciting a conditioned response through association with an unconditioned stimulus. The process of acquisition, where this learning occurs, and the subsequent phenomena of contiguity, contingency, generalization, discrimination, extinction, and spontaneous recovery are crucial for a comprehensive understanding of classical conditioning.
During the...
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Avoidance Learning and Learned Helplessness01:14

Avoidance Learning and Learned Helplessness

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Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
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Implicit Memories01:24

Implicit Memories

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Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
One key aspect of implicit...
425
Interference and Decay01:16

Interference and Decay

410
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
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Cognitive Learning01:21

Cognitive Learning

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Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
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相关实验视频

Updated: Jan 13, 2026

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
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灭绝记忆:将学习置于背景中

Nikolai Axmacher1, Daniel Pacheco-Estefan2, Antoine Bouyeure3

  • 1Center for Studies of Psychological Application and School of Psychology, South China Normal University, Guangzhou 510631, China; Department of Neuropsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum 44801, Germany.

Trends in cognitive sciences
|January 9, 2026
PubMed
概括
此摘要是机器生成的。

恐惧记忆是普遍的,但灭绝学习是特定于环境的. 对于灭绝背景的神经模式是不同的,这表明它们像情节性记忆一样起作用,影响记忆系统的分类.

关键词:
语境 语境 语境 语境 语境 语境这是一种情节性记忆 (episodic memory).灭绝的学习学习.恐惧的条件化是恐惧的条件化.记忆系统 记忆系统代表性的相似性分析.

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Disrupting Reconsolidation of Fear Memory in Humans by a Noradrenergic β-Blocker
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科学领域:

  • 神经科学是一个神经科学.
  • 认知心理学 认知心理学
  • 记忆研究 记忆研究

背景情况:

  • 恐惧记忆通常在类似的背景下进行概括.
  • 众所周知,灭绝学习,即减少恐惧的过程,高度依赖上下文.
  • 了解记忆中的上下文依赖的神经基础对于治疗干预至关重要.

研究的目的:

  • 调查恐惧获取与灭绝背景的神经表现.
  • 确定灭绝背景是否与收购背景有所区别.
  • 探索这些发现对记忆系统分类学的影响.

主要方法:

  • 在神经数据上使用代表性相似性分析 (RSA).
  • 在恐惧获取和灭绝学习阶段对背景的神经表示进行比较.
  • 分析了与不同背景相关的神经模式的独特性.

主要成果:

  • 发现灭绝背景的神经表现明显比恐惧获取背景的神经表现更明显.
  • 这种增加的独特性表明,对于灭绝环境而言,有一个独特的编码过程.
  • 这些发现与情节性记忆表现的特征一致.

结论:

  • 灭绝学习的上下文依赖性体现在不同的神经表征中.
  • 这些表示与情节性记忆有相似之处,挑战现有的记忆系统分类.
  • 需要进一步的研究才能将这些发现完全整合到记忆理论中.